| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2013 Google Inc. |
| * Copyright (C) 2015-2016 Intel Corp. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <program_loading.h> |
| #include <cbmem.h> |
| |
| /* |
| * Romstage needs quite a bit of stack for decompressing images since the lzma |
| * lib keeps its state on the stack during romstage. |
| */ |
| #define ROMSTAGE_RAM_STACK_SIZE 0x5000 |
| |
| uintptr_t romstage_ram_stack_base(size_t size, int src) |
| { |
| /* cbmem_add() does a find() before add(). */ |
| if (src == ROMSTAGE_STACK_CBMEM) |
| return (uintptr_t)cbmem_add(CBMEM_ID_ROMSTAGE_RAM_STACK, size); |
| if (src == ROMSTAGE_STACK_LOW_MEM) |
| return CONFIG_RAMTOP - size; |
| return 0; |
| } |
| |
| uintptr_t romstage_ram_stack_bottom(void) |
| { |
| return romstage_ram_stack_base(ROMSTAGE_RAM_STACK_SIZE, |
| ROMSTAGE_STACK_CBMEM); |
| } |
| |
| uintptr_t romstage_ram_stack_top(void) |
| { |
| uintptr_t stack_top = romstage_ram_stack_base(ROMSTAGE_RAM_STACK_SIZE, |
| ROMSTAGE_STACK_CBMEM); |
| stack_top += ROMSTAGE_RAM_STACK_SIZE; |
| return stack_top; |
| } |